ES6: Duplicate properties are no longer an error

test/webkit/object-literal-syntax.js

 // Copyright 2013 the V8 project authors. All rights reserved.
 // Copyright (C) 2005, 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
 //
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions
 // are met:
 // 1.  Redistributions of source code must retain the above copyright
 //     notice, this list of conditions and the following disclaimer.
 // 2.  Redistributions in binary form must reproduce the above copyright
 //     notice, this list of conditions and the following disclaimer in the
 //     documentation and/or other materials provided with the distribution.
 //
 // THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND ANY
 // EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 // WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 // DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY
 // DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 // (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 // LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
 // ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 // SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 description("Make sure that we correctly identify parse errors in object literals");
 
-shouldThrow("({a:1, get a(){}})");
-shouldThrow("({a:1, set a(v){}})");
-shouldThrow("({get a(){}, a:1})");
-shouldThrow("({set a(v){}, a:1})");
-shouldThrow("({get a(){}, get a(){}})");
-shouldThrow("({set a(v){}, set a(v){}})");
-shouldThrow("({set a(v){}, get a(){}, set a(v){}})");
-shouldThrow("(function(){({a:1, get a(){}})})");
-shouldThrow("(function(){({a:1, set a(v){}})})");
-shouldThrow("(function(){({get a(){}, a:1})})");
-shouldThrow("(function(){({set a(v){}, a:1})})");
-shouldThrow("(function(){({get a(){}, get a(){}})})");
-shouldThrow("(function(){({set a(v){}, set a(v){}})})");
-shouldThrow("(function(){({set a(v){}, get a(){}, set a(v){}})})");
+shouldBeTrue("({a:1, get a(){}}), true");
+shouldBeTrue("({a:1, set a(v){}}), true");
+shouldBeTrue("({get a(){}, a:1}), true");
+shouldBeTrue("({set a(v){}, a:1}), true");
+shouldBeTrue("({get a(){}, get a(){}}), true");
+shouldBeTrue("({set a(v){}, set a(v){}}), true");
+shouldBeTrue("({set a(v){}, get a(){}, set a(v){}}), true");
+shouldBeTrue("(function(){({a:1, get a(){}})}), true");
+shouldBeTrue("(function(){({a:1, set a(v){}})}), true");
+shouldBeTrue("(function(){({get a(){}, a:1})}), true");
+shouldBeTrue("(function(){({set a(v){}, a:1})}), true");
+shouldBeTrue("(function(){({get a(){}, get a(){}})}), true");
+shouldBeTrue("(function(){({set a(v){}, set a(v){}})}), true");
+shouldBeTrue("(function(){({set a(v){}, get a(){}, set a(v){}})}), true");
 shouldBeTrue("({a:1, a:1, a:1}), true");
 shouldBeTrue("({get a(){}, set a(v){}}), true");
 shouldBeTrue("({set a(v){}, get a(){}}), true");
 shouldBeTrue("(function(){({a:1, a:1, a:1})}), true");
 shouldBeTrue("(function(){({get a(){}, set a(v){}})}), true");
 shouldBeTrue("(function(){({set a(v){}, get a(){}})}), true");